Woh Chai Shan (Chinese: 窩仔山), a.k.a. Shek Kip Mei Hill (石硤尾山), Mission Hill or Bishop Hill (主教山), is a hill in Shek Kip Mei, New Kowloon, Hong Kong. It is approximately 86 metres (282 feet) tall.
The hill is zoned as open space under Hong Kong's town planning system. It is mostly undeveloped and is used by some local residents for recreation and leisure. The Kwun Tong line of the Mass Transit Railway (MTR) runs beneath the hill.
Kai Tak Airport (IATA: HKG, ICAO: VHHH) was an international airport of Hong Kong from 1925 until 1998. Officially known as Hong Kong International Airport from 1954 to 6 July 1998, it is often referred to as Hong Kong International Airport, Kai Tak,and Kai Tak International Airport, to distinguish it from its successor, Chek Lap Kok International Airport, built on reclaimed and levelled land around the islands of Chek Lap Kok and Lam Chau, 30 kilometres (19 mi) to the west.
Because of the geography of the area, with water on three sides of the runway, Kowloon City's residential apartment complexes to the north-west and mountains more than 2,000 feet (610 m) high to the north-east of the airport, aircraft could not fly over the mountains and quickly drop in for a final approach. Instead, aircraft had to fly above Victoria Harbour and Kowloon City, passing north of Mong Kok's Bishop Hill. After passing Bishop Hill, pilots would see Checkerboard Hill with a large orange-and-white checkerboard pattern. Once the pattern was sighted and identified, the aircraft made a low-altitude (sub-600 ft; 180 m) 47-degree right-hand turn, ending with a short final approach and touchdown. For pilots, this airport was technically demanding, as the approach could not be flown by aircraft instruments, but had to be flown visually because of the right-hand turn required.